Stewart Grady BESS
150.5 MW storage in Martin, TX · In queue since May 2023 · Proposed COD April 2028
150.5 MW
Capacity
1
Components
Battery
3 years
In Queue
Facility Study
IA Status
COD target: 2028
Total Duration
4y 11m
Interconnection request submitted to ISO/RTO
ERCOT uses a serial "connect and manage" approach — fastest among major ISOs.
Typical: 18–30 months (fastest major ISO)
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2028-04-19
The Stewart Grady BESS project is a proposed 150.5 MW battery storage project located in Martin County, Texas. The project is being developed by Grady BESS and is currently active in the ERCOT interconnection queue as entry ERCOT-25INR0396, with a queue entry date of May 26, 2023. The proposed commercial operation date is April 19, 2028.
The project's interconnection status is currently in the Facility Study phase. The point of interconnection is Tap 138kV 11368 Expanse Switch _x0013_ 23841 Sale Ranch.
Generated from interconnection queue and public data sources
State
TX
County
Martin
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Grady BESS
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
Tap 138kV 11368 Expanse Switch _x0013_ 23841 Sale Ranch
Data Source
LBNL + Live
- ISO / RTO
- ERCOT
- Trading Hub
- HB_NORTH
- Hub Confidence
- LOW
This project's market context is estimated from its Point of Interconnection. Hub and node assignments are approximate and based on geographic inference from the POI substation name.
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